Modeling of Digital-Displacement Pump-Motors and Their Application as Hydraulic Drives for Nonuniform Loads
Modeling of Digital-Displacement Pump-Motors and Their Application as Hydraulic Drives for Nonuniform Loads
复制标题
数字排量泵电机建模及其作为非均匀负载液压驱动的应用
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
S. Salter
中科院分区：
文献类型：
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作者：
M. Ehsan;W. H. S. Rampen;S. Salter
数字排量泵马达是一种混合装置，将往复式液压系统与微处理器控制相结合，创造了一个高度集成的机器，能够产生可变流量和功率。它以传统的液压柱塞泵为基础，但每个气缸都装有主动控制的锥阀。这允许在任何所需的顺序中逐笔启用或禁用。对泵-电机系统进行时域建模，预测其在不同控制模式下变需求、变转速下的性能。与传统技术相比，这种方法的优点在于响应速度和固有的能源效率。
The digital-displacement pump-motor is a hybrid device, which combines reciprocating hydraulics with micro-processor control, creating a highly integrated machine capable of producing variable flow and power. It is based on the conventional hydraulic piston pump but with actively controlled poppet valves for each cylinder. This allows enabling or disabling on a stroke-by-stroke basis in any desired sequence. Time-domain modeling of the pump-motor system predicts the performance under variable-demand, variable-speed at different control-modes. The advantages of this approach over conventional techniques lie with both the response speed and the inherent energy efficiency.